CN103670765B - Utilize the diesel engine speed regulation device and method of digital output modul - Google Patents
Utilize the diesel engine speed regulation device and method of digital output modul Download PDFInfo
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- CN103670765B CN103670765B CN201310657416.6A CN201310657416A CN103670765B CN 103670765 B CN103670765 B CN 103670765B CN 201310657416 A CN201310657416 A CN 201310657416A CN 103670765 B CN103670765 B CN 103670765B
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Abstract
The diesel engine speed regulation device utilizing digital output modul of the present invention, arranges raising speed, reduction of speed two relays, the digital output passage (DO) of the coil access microcontroller of relay, raising speed, the reduction of speed control circuit of the contact access electronic speed regulator of relay.Diesel engine actual speed (RPM_ENG) is used to replace the rotating speed of target (RPM_REF) set, the rotating speed of target (RPM_REF) set is estimated by the logical algorithm of microcontroller, and by comparing actual speed (RPM_ENG) and the difference of rotating speed of target (RPM_REQ) required, outer contact relay is controlled by digital output passage (DO), and then control ascending, descending speed switch, realize automatic speed setting.Achieve and automatically control diesel engine speed regulation and rotating speed, power control automatically, realize the function that automatic experiment process controls, improve test efficiency, reduce the labor intensity of tester.
Description
Technical field
The present invention relates to a kind of diesel engine speed regulation device and method utilizing digital output modul, belong to diesel engine control technology field.
Background technique
The rotational speed regulation of high-power diesel engine is normally realized by the speed regulator of diesel engine.Speed regulator type conventional at present has mechanical speed governor, combined regulator, electronic speed regulator and electric spray control system speed governing.Wherein electronic speed regulator generally only provides ascending, descending rotating speed button mode of speed regulation, and does not provide the mode of analog amount setting, communication setting.The system of ascending, descending speed button speed governing is simple, relatively be convenient to manual manipulation, but adopt the diesel engine of this type of mode of speed regulation in process of the test, diesel engine speed must be observed by tester to change, manual governing, loading, which increase the labor intensity of tester, and cannot realize quick speed setting, automatic power control system cannot be coordinated to realize experiment process automatically control, reduce test efficiency and precision.As Control System of Microcomputer will be made directly to set diesel engine rotating speed of target by communication mode, or provide the feedback signal of rotating speed of target by supplier, this needs electronic speed regulator supplier to revise hardware, software, open communication protocol.And require that supplier is almost impossible thing for single project provides software modification and agreement openly to serve this.
Summary of the invention
The object of this reality invention overcomes the deficiency of above-mentioned prior art exactly, a kind of diesel engine speed regulation device and method utilizing digital output modul is provided, do not having in the precision target speed feedback situations such as communication, analog amount feedback, realizing rotating speed of target setting fast, accurately.
The object of the present invention is achieved like this: a kind of diesel engine speed regulation method utilizing digital output modul, raising speed, reduction of speed two relays are set, raising speed, the reduction of speed digital output passage DO of the coil access microcontroller of relay, raising speed, the reduction of speed control circuit of the contact access electronic speed regulator of relay, is characterized in that taking the following step:
A. request target rotating speed RPM_REQ is received;
B. diesel engine actual speed RPM_ENG is detected;
C. the absolute difference Δ V=|RPM_REQ-RPM_ENG| of computation requests rotating speed of target and actual speed;
D. Δ V is compared with setting value, according to output time T_DO and the output time interval T _ ALT of the digital output passage DO of comparative result determination microcontroller;
E. microcontroller controls according to output time T_DO and output time interval T _ ALT the output being connected to the digital output passage DO of relay coil;
F. the contact of access electronic speed regulator raising speed, reduction of speed control circuit is with the output controlling microcontroller digital output passage DO, sends ascending, descending speed signal to electronic speed regulator;
G. electronic speed regulator is according to the lifting speed signal received, and regulates rotating speed of target RPM_REF, and regulates diesel engine speed according to RPM_REF.
The solution of the present invention, make use of Control System of Microcomputer can the feature of flexible programming, in conjunction with the actual conditions of Diesel Engine Digital Electronic Speed System, diesel engine rotating speed of target value of feedback can not had, cannot by communication, analog amount, under the means such as switching value directly set diesel engine rotating speed of target situation, control to rise by Control System of Microcomputer, reduction of speed switch, automatic control diesel engine rotating speed of target setting, achieve and automatically control diesel engine speed regulation and then realize automatic rotating speed, power controls, realize the function that automatic experiment process controls, improve test efficiency, reduce the labor intensity of tester.
Accompanying drawing explanation
Fig. 1 is the diesel engine speed regulation device schematic diagram utilizing digital output modul of the embodiment of the present invention.
Fig. 2 is the diesel engine speed regulation Method And Principle block diagram utilizing digital output modul of the embodiment of the present invention.
Fig. 3 is the software flow pattern utilizing the diesel engine speed regulation method of digital output modul of the embodiment of the present invention.
Embodiment
Referring to accompanying drawing 1, the diesel engine speed regulation device utilizing digital output modul of the present embodiment, comprise electronic speed regulator and microcontroller, raising speed, reduction of speed two relays are set, the digital output passage (DO) of the coil access microcontroller of relay, raising speed, the reduction of speed control circuit of the contact access electronic speed regulator of relay.
Referring to accompanying drawing 2, the diesel engine speed regulation method utilizing digital output modul of the present embodiment, its system cloud gray model principle is:
1. first system enters 1.2 reception request target rotating speeds (RPM_REQ) after starting.
2. enter 1.3, detect diesel engine actual speed (RPM_ENG).
3. enter 1.4, calculate rotating speed difference absolute value delta V (request target rotating speed and actual speed difference), Δ V=|RPM_REQ-RPM_ENG|.
4. enter 1.5, according to Δ V, judge DO output time T_DO and DO output time interval T _ ALT (as shown in Figure 2).
5. enter 1.6, export according to T_DO and T_ALT control DO, control DO channel levels is specified level.
6. enter 1.7, outer contact relay is subject to the control that DO exports, and sends ascending, descending speed signal.
7. enter 1.8, electronic speed regulator according to the lifting speed signal received, internal regulation rotating speed of target (RPM_REF), and according to RPM_REF regulate diesel engine speed.
Referring to accompanying drawing 3, for realizing above-mentioned control principle, need to be programmed to Control System of Microcomputer by computer language, its software control flow process is as follows:
1. system starts rear start by set date interrupt service routine, enters frame 4.1.
2. enter frame 4.2, counter T_COUNT=T_COUNT+1, enters next step.
3. enter frame 4.3, receive upper-position unit request target rotating speed RPM_REQ, enter next step.
4. enter frame 4.4, detect diesel engine actual speed RPM_ENG, enter next step.
5. enter frame 4.5, calculate the absolute value delta V=|RPM_REQ-RPM_ENG| of rotating speed difference, enter next step.
6. enter frame 4.6, judge whether Δ V is more than or equal to 40: be, enter frame 4.7; No, enter frame 4.8.
7. enter frame 4.7, DO passage control time T_DO=270ms, DO passage control time interval T _ ALT=450ms.
8. enter frame 4.8, DO passage control time T_DO=150ms, DO passage control time interval T _ ALT=1200ms.
9. enter frame 4.9, judge whether diesel engine actual speed RPM_ENG is less than 370rpm or is greater than 960rpm: be, enter frame 4.10; No, enter frame 4.11.
10. enter frame 4.10, DO passage control time T_DO=150ms, DO passage control time interval T _ ALT=1200ms.
11. enter frame 4.11, judge whether large than the actual speed RPM_ENG 3rpm of request rotating speed RPM_REQ: be enter frame 4.12; No, enter frame 4.13.
12. enter frame 4.12, DO passage predefined value DO_T=raising speed, enter frame 4.16.
13. enter frame 4.13, judge whether large than the request rotating speed 3rpm of actual speed: be enter frame 4.14; No, enter frame 4.15.
14. enter frame 4.14, DO passage predefined value DO_T=reduction of speed, enter frame 4.16.
15. enter frame 4.15, DO passage predefined value DO_T=keeps speed, enters frame 4.16.
16. enter frame 4.16, judge whether actual speed is greater than 1050, and diesel engine exceeds the speed limit: be enter frame 4.17; No, enter frame 4.18.
17. enter frame 4.17, DO outputs=reduction of speed, enter frame 4.23.
18. enter frame 4.18, judge whether counter T_COUNT is less than DO passage control time T_DO: be enter frame 4.19; No, enter frame 4.20;
19. enter frame 4.19, DO output=DO passage predefined value DO_T, enter frame 4.23.
20. enter frame 4.20, judge whether counter T_COUNT is less than DO passage control time interval T _ ALT: be enter frame 4.21; No, enter frame 4.22;
21. enter frame 4.21, DO exports=maintenance speed, enters frame 4.23.
22. enter frame 4.22, DO exports=maintenance speed, counter T_COUNT=0, enters frame 4.23.
23. enter frame 4.23, complete interrupt service routine, return main program, wait for next Interruption.Choosing of each limits value
1. the choosing of absolute value delta V of rotating speed difference: calculating Δ V, is to select different speed governing frequencies according to different Δ V, to reduce speed governing frequency in actual speed close to during request rotating speed, prevents the fluctuation of speed.The actual value that the Δ V of specific embodiment adopts when being 8RK270 diesel engine test, after can carrying out actual test, debugging, according to circumstances chooses according to different diesel engine.
2.DO passage control time T_DO chooses: T_DO is used for control DO passage and exports as the effective time, and control effects is equal to the time that ascending, descending speed button is pressed, and different rotating speeds is poor, T_DO difference in actual speed situation.The actual value that the T_DO of specific embodiment adopts when being 8RK270 diesel engine test.After can carrying out actual test, debugging according to different diesel engine, according to circumstances choose.
3.DO passage control time interval T _ ALT chooses: T_ALT is used for control DO passage and exports as effective frequency, and effect is equal to the frequency pressed ascending, descending speed button and press, and different rotating speeds is poor, T_ALT difference in actual speed situation.The actual value that the T_ALT of specific embodiment adopts when being 8RK270 diesel engine test.After can carrying out actual test, debugging according to different diesel engine, according to circumstances choose.
4. choosing close to limit speed value 370rpm and 960rpm: when being used for controlling actual speed close to idling (330rpm) or rated speed (1000rpm), automatically reduce speed governing frequency and speed governing step-length, to prevent the fluctuation of speed.The employing of specific embodiment be 8RK270 diesel engine test time actual value.After can carrying out actual test, debugging according to different diesel engine, according to circumstances choose.
5. to exceed the speed limit the choosing of limit value 1050rpm: be used for preventing that diesel engine from exceeding the speed limit, driving.Consistent with the actual hypervelocity speed setting of diesel engine.
6. control the choosing of static difference 3rpm: for controlling rotating speed static error, this value choose the specific requirement of answering reference test outline.
Claims (1)
1. one kind utilizes the diesel engine speed regulation method of digital output modul, raising speed, reduction of speed two relays are set, raising speed, the reduction of speed digital output passage DO of the coil access microcontroller of relay, raising speed, the reduction of speed control circuit of the contact access electronic speed regulator of relay, is characterized in that taking the following step:
A. request target rotating speed RPM_REQ is received;
B. diesel engine actual speed RPM_ENG is detected;
C. the absolute difference Δ V=|RPM_REQ-RPM_ENG| of computation requests rotating speed of target and actual speed;
D. Δ V is compared with setting value, according to output time T_DO and the output time interval T _ ALT of the digital output passage DO of comparative result determination microcontroller;
E. microcontroller controls according to output time T_DO and output time interval T _ ALT the output being connected to the digital output passage DO of relay coil;
F. the contact of access electronic speed regulator raising speed, reduction of speed control circuit is with the output controlling microcontroller digital output passage DO, sends ascending, descending speed signal to electronic speed regulator;
G. electronic speed regulator is according to the lifting speed signal received, and regulates rotating speed of target RPM_REF, and regulates diesel engine speed according to RPM_REF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310657416.6A CN103670765B (en) | 2013-12-05 | 2013-12-05 | Utilize the diesel engine speed regulation device and method of digital output modul |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310657416.6A CN103670765B (en) | 2013-12-05 | 2013-12-05 | Utilize the diesel engine speed regulation device and method of digital output modul |
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| Publication Number | Publication Date |
|---|---|
| CN103670765A CN103670765A (en) | 2014-03-26 |
| CN103670765B true CN103670765B (en) | 2016-02-24 |
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| CN201310657416.6A Expired - Fee Related CN103670765B (en) | 2013-12-05 | 2013-12-05 | Utilize the diesel engine speed regulation device and method of digital output modul |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03266730A (en) * | 1990-03-16 | 1991-11-27 | Toyota Motor Corp | Running control device |
| CN2353900Y (en) * | 1998-12-16 | 1999-12-15 | 王维东 | Electronic speed-regulator for diesel engine |
| CN201129215Y (en) * | 2007-12-25 | 2008-10-08 | 中国北车集团大连机车车辆有限公司 | Converting device for electronic speed-regulator for diesel engine to replace mechanical speed regulating device interface |
| CN201750398U (en) * | 2010-08-03 | 2011-02-16 | 天水星火机床有限责任公司 | Frequency conversion speed regulation device of machine transmission system |
| CN102211648A (en) * | 2010-04-06 | 2011-10-12 | 无锡晶磊电子有限公司 | Electronic speed regulator for yacht |
-
2013
- 2013-12-05 CN CN201310657416.6A patent/CN103670765B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03266730A (en) * | 1990-03-16 | 1991-11-27 | Toyota Motor Corp | Running control device |
| CN2353900Y (en) * | 1998-12-16 | 1999-12-15 | 王维东 | Electronic speed-regulator for diesel engine |
| CN201129215Y (en) * | 2007-12-25 | 2008-10-08 | 中国北车集团大连机车车辆有限公司 | Converting device for electronic speed-regulator for diesel engine to replace mechanical speed regulating device interface |
| CN102211648A (en) * | 2010-04-06 | 2011-10-12 | 无锡晶磊电子有限公司 | Electronic speed regulator for yacht |
| CN201750398U (en) * | 2010-08-03 | 2011-02-16 | 天水星火机床有限责任公司 | Frequency conversion speed regulation device of machine transmission system |
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| Publication number | Publication date |
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| CN103670765A (en) | 2014-03-26 |
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